纵向的第一个 UIView 和横向的第二个 [英] First UIView in Portrait orientation and second in Landscape

问题描述

我有一个有 2 个视图控制器的应用程序.第一个视图控制器应该是纵向的，这没问题，但是当我加载第二个视图控制器时，我无法使应用程序方向为横向...问题出在 iOS 6 上.

I have an app which has 2 view controllers. The first viewcontroller should be in portrait and it's ok, but when I'm loading the second view controller, I could not make the app orientation to be landscape... The problem is with iOS 6.

我已经尝试了在 SO 上找到的所有内容.

I have tried everything I found on SO.

在 viewWillAppear 和 viewDidLoad 上使用 [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animation:NO];，

Using [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:NO]; on viewWillAppear and viewDidLoad,

还有:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
     {
    if (interfaceOrientation == UIInterfaceOrientationPortrait) {
    return (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
    } else {
    return (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
    }
   }

 -(BOOL)shouldAutorotate
  {
return YES;
  }

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
 {
return UIInterfaceOrientationLandscapeRight;
 }

-(NSInteger)supportedInterfaceOrientations{

return UIInterfaceOrientationMaskLandscapeRight;
}

推荐答案

在 2nd View Controller's viewDidLoad 方法中添加这些代码到 transform view 进入landscape :

Add these code in 2nd View Controller's viewDidLoad method to transform view into landscape :

[self rotateController:self degrees:-90];
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:NO];
//set it according to 3.5 and 4.0 inch screen in landscape mode
[self.view setBounds:CGRectMake(0, 0, 480, 320)]; 

添加 rotateController 方法:

 -(void) rotateController:(UIViewController *)controller degrees:(NSInteger)aDgrees
{
  UIScreen *screen = [UIScreen mainScreen];
  if(aDgrees>0)
    controller.view.bounds = CGRectMake(0, 0, screen.bounds.size.height, screen.bounds.size.width);
  else
  {
    controller.view.bounds = CGRectMake(0, 0, screen.bounds.size.width, screen.bounds.size.height);
  }
  controller.view.transform = CGAffineTransformConcat(controller.view.transform, CGAffineTransformMakeRotation(DEGREES_TO_RADIANS(aDgrees)));
}

现在在 viewWillDisappear 的 方法中将 transform view 转换为 protrait .添加这些:

Now in viewWillDisappear's method to transform view into protrait . Add these:

[self rotateController:self degrees:90];
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO];
//set it according to 3.5 and 4.0 inch screen in protrait mode
[self.view setBounds:CGRectMake(0, 0, 320, 480)];

如果没有添加，你的 orientation 方法也应该是这样的:

Also your orientation methods should be like these if not added add these :

- (BOOL)shouldAutorotate
{    
  //make view landscape on start
  return NO;
}

- (NSUInteger)supportedInterfaceOrientations
{
  return UIInterfaceOrientationMaskLandscapeLeft;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
  return UIInterfaceOrientationLandscapeLeft;
}

EDIT :为 radian

#define DEGREES_TO_RADIANS(angle) ((angle) / 180.0 * M_PI)

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